Biom C4 Golf Shoes. ECCO Mens BIOM C4 GOLF SHOES in WHITE/CONCRETE Size 9/9.5 Brand New w/ Box. A new addition for Summer 2022. Breathable comfort and innovative performance are mixed with a contemporary, sneaker-style aesthetic in the ECCO M GOLF BIOM® C4, the next generation of the BIOM® COOL PRO. For 360-degree breathability and waterproofing, the GORE-TEX SURROUND® construction is combined with the EXHAUST GRID that enables air ventilation towards the sole of your foot. Crafted from ECCO Performance Leather and a new, super-stretchy mesh sock, the hybrid is set on the progressive ECCO MTN GRIP outsole, and powered by BIOM® NATURAL MOTION® Technology. FEATURES AT A GLANCE. CCO Performance Leather from our own tanneries is combined with a new, super-stretchy mesh sock. ECCO FLUIDFORMT Direct Comfort Technology for cushioning, rebound and flexibility. GORE-TEX SURROUND® for waterproof protection and 360-degree breathability. BIOM® NATURAL MOTION® Technology brings you closer to the ground for stability and control. ECCO MTN GRIP has three different sections providing traction, stability and rotational support throughout the swing. Removable OrthoLite® insole for long-term cushioning and breathability. How do I find my shoe size? The best way to make sure that you order the right size is to measure your feet and then compare it with the size chart above to find the appropriate size. Please follow these 4 simple steps to accurately measure your feet. All your need to measure your feet from heel to toe is a piece of paper, a pencil and a ruler. Place the paper on the floor up against a wall. Place the heel against the wall. Mark the longest part of your foot on the paper. Repeat procedure with the other foot. Measure the length of each mark and match it with the size chart. Let the longest foot decide the shoe size.